--list-secret-keys
-K
    List all keys from the secret keyrings, or just the ones given on the command line. A # after the letters sec means that the secret key is not usable (for example, if it was created via --export-secret-subkeys).

      _                           ____   ___     __               _  _ __  
     | |__   __ ___   ___ __ ___ |___ \ / _ \   / /_   _____ _ __| || |\ \ 
     | '_ \ / _` \ \ / / '_ ` _ \  __) | (_) | | |\ \ / / _ \ '__| || |_| |
     | | | | (_| |\ V /| | | | | |/ __/ \__, | | | \ V /  __/ |  |__   _| |
     |_| |_|\__,_| \_/ |_| |_| |_|_____|  /_/  | |  \_/ \___|_|     |_| | |
                                                \_\                    /_/